SCP-XXXX is to have a wall build around it, each side 30m away. The height of the wall is to be 15m high and is to have Foundation personnel stationed around it.

You're saying containment was built around this thing but doing it in a complicated way. The dimensions of the area aren't shown to be important. Also it doesn't say how they are keeping this a secret from the office workers or people in the surrounding area.

The whole wedding thing feels off too. The person who disappeared could have been one of the office workers. Or anyone living near the building. The sudden onset of the effects it causes in the area would be enough to attract the Foundation's attention.

I liked the effects except the last one which felt random. Shouldn't "Not_Enough_Memory" be the thing that causes memory loss? I don't see the connection to cardiac arrest. Maybe I'm just missing the reasoning there. Maybe some test logs to explain the effects?